The utility model relates to an infant down feather blanket which comprises a blanket body. A cap portion for accommodating the head of an infant is arranged at the upper end of the blanket body. Side blankets are arranged on two sides of the blanket body. A bottom blanket is arranged at the bottom of the blanket body. The blanket body, the side blankets, the bottom blanket and the cap portion are respectively filled with down feather in a sealed mode. Compared with the background art, the infant down feather blanket has the advantages of being simple in structure and convenient to use. When the infant is arranged in the blanket, the blanket can avoid loosening through binding of tying ropes, thereby having a good heat preservation effect to the infant. Since the blanket body, the side blankets and the bottom blanket are respectively filled with the down feather in a sealed mode, the infant down feather blanket can achieve the good heat preservation effect on the condition that the infant does not need to be packaged with a plurality of layers of wrapping items.